[DarkScythe]

Backing up your AP saves is a good idea, but I don't think you can load them in OotM. It would be a new game starting from scratch. It will also progress slightly differently since for one, you have new goodies to play with, and secondly the games are randomly seeded each tme you begin a new game, so the shop that had X unit won't necessarily have it anymore. I'd imagine that was the same with KB:TL as well (haven't played that yet; I jumped straight to CW.)

A reinstall might at the very least give you a clean slate to start tinkering again, but I can't guarantee it would actually fix anything.

For the moment, if you're going to switch over to CW and since I still have it installed, I'll download the program I linked before (I assume it's the right one, since you haven't refuted it yet) and try it in one of my savegames. I'll get back to you on whether it works.

EDIT:

All right, I gave it a shot. Mixed results.
I'm not entirely sure what the optimal result of that free battle camera thing working are though, so maybe it's normal. I did not achieve full 360 degree rotation, but the camera restrictions were definitely relaxed substantially.
I could zoom forever, and the rotation increased to about 90 degrees in either direction.

In either case:
KBCW without program installed: Restrictive battle camera
KBCW with program ran after KBCW: "Unlocked" battle camera (but not 360 degrees)
KBCW with program run before KBCW: Same as above
KBCW with program run and change to game.ini: Same as above

It doesn't seem to matter where this program is placed, as it's external to the game and only hooks in via the .NET framework.

Hope that helps.